Influence of surfactant interaction on ultrafine copper powder electrodeposition

Abstract

Ultrafine copper powder with uniform morphology and size was synthesized by electrodeposition. By using the Box‐Behnken design of response surface methodology, to study the interaction between anionic surfactants and nonionic surfactants at different concentrations of copper sulfate pentahydrate. The resulting copper powder was characterized by scanning electron microscopy. The results show that it is difficult to obtain uniform copper powder by using a single anionic surfactant. The staggered adsorption mechanism of the non‐ionic surfactant and the anionic surfactant at the interface disperses and stabilizes the micellar interface and prevents continued growth of the copper powder. The resulting copper powder is nearly spherical with uniform morphology and particle size. Through the optimization of the response surface methodology, a nearly spherical copper powder with an average particle size of 0.61 μm and uniform shape was finally obtained.

Fine Copper Powders Production

“…Fine copper powder is produced by different methods: in the inert gas atmosphere, by means of electric blasting, through application of ammonia and sulfur acid solution, by the method of electrolysis and air classification [2][3][4][5][6][7][8][9][10]. One of the most commonly used methods is electrolysis from sulfuric acid solution, using which it is possible to produce the powder within a wide range of sizing: from 5 to 250 µm.…”

Study into the effect of sodium lignosulfonate, anionic surfactants and their mixtures on the rate of copper ion cementation by zinc

“…В гидрометаллургии довольно часто используют органические реагенты и поверхностноактивные вещества (ПАВ), например при электролизе для создания плотной пены на поверхности ванны [1,2] или для получения порошков заданной крупности [3][4][5][6][7]. При автоклавной переработке сульфидного цинкового сырья ПАВ также часто применяются для снижения смачиваемости минералов расплавленной серой, образующейся в процессе выщелачивания [8][9][10].…”